A highly porous metal-organic framework (MOF), MIL-101, was modified for the first time with the nucleobase adenine (Ade) by grafting onto the MOF. The Ade-grafted MOF, Ade-MIL-101, was further protonated to obtain P-Ade-MIL-101, and these MOFs were utilized to remove nitrogen-containing compounds (NCCs) (such as indole (IND) and quinolone (QUI)) from a model fuel by adsorption. These functionalized MOFs exhibited remarkable adsorption performance for NCCs compared with that shown by commercial activated carbon (AC) and pristine MIL-101, even though the porosities of the functionalized-MOFs were lower than that of pristine MIL-101. P-Ade-MIL-101 has 12.0 and 10.8 times capacity to that of AC for IND and QUI adsorption, respectively; its adsorption performance was competitive with that of other reported adsorbents. The remarkable adsorption of IND and QUI by Ade-MIL-101 was attributed to H-bonding. H-bonding combined with cation-π interactions was proposed as the mechanism for the removal of IND by P-Ade-MIL-101, whereas acid-base interactions were thought to be responsible for QUI adsorption by P-Ade-MIL-101. Moreover, P-Ade-MIL-101 can be regenerated without any severe degradation and used for successive adsorptions. Therefore, P-Ade-MIL-101 was recommended as an effective adsorbent for fuel purification by adsorptive removal of NCCs.

中文翻译：

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使用腺嘌呤接枝的金属有机框架吸附去除模型燃料中的吲哚和喹啉

一种高度多孔的金属有机骨架（MOF），MIL-101，是通过接枝到MOF上首次用核碱基腺嘌呤（Ade）修饰的。将Ade接枝的MOF Ade-MIL-101进一步质子化以获得P-Ade-MIL-101，并将这些MOF用于去除含氮化合物（NCC）（例如吲哚（IND）和喹诺酮（QUI） ））从模型燃料中吸附。这些官能化的MOF与商用活性炭（AC）和原始的MIL-101相比，对NCC表现出显着的吸附性能，即使官能化的MOF的孔隙率低于原始MIL-101的孔隙率。P-Ade-MIL-101的IND和QUI吸附容量分别是AC的12.0和10.8倍；它的吸附性能与其他已报道的吸附剂竞争。Ade-MIL-101对IND和QUI的显着吸附归因于H键。提出了结合阳离子-π相互作用的H键作为P-Ade-MIL-101去除IND的机理，而酸碱相互作用被认为是P-Ade-MIL-101吸附QUI的原因。而且，P-Ade-MIL-101可以再生而不会发生严重降解，并用于后续吸附。因此，推荐使用P-Ade-MIL-101作为通过吸附去除NCC进行燃料纯化的有效吸附剂。P-Ade-MIL-101可以再生而不会发生严重降解，可用于连续吸附。因此，推荐使用P-Ade-MIL-101作为通过吸附去除NCC进行燃料纯化的有效吸附剂。P-Ade-MIL-101可以再生而不会发生严重降解，可用于连续吸附。因此，推荐使用P-Ade-MIL-101作为通过吸附去除NCC进行燃料纯化的有效吸附剂。